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STIHL®

20-Inch 50.2 cc Gas Chain Saw

Mfg.#
MS 261 C-M 20
Sku#
3661014
  • This popular mid-size chainsaw puts STIHL M-Tronic™ technology in the hands of professionals.
  • This product features M-Tronic™ (M) - a new generation of Intelligent Engine Management that eliminates the low and high speed carburetor adjustment screws, compensates for dirty air filter and changes in elevation and fuel quality for optimum engine power at all times.
  • The Ematic™ guide bar, when used with STIHL OILOMATIC® saw chain, will provide proper lubrication and less oil consumption than conventional methods.
  • The ElastoStart™ starter handle is an exclusive feature of STIHL. It is a starting grip with a built-in shock absorber that helps reduce the effort when pulling on the starter cord.
  • The IntelliCarb™ Compensating Carburetor is designed to automatically adjust the air/fuel ratio when the air filter becomes restricted or partially clogged and maintains the engine’s correct RPM.

* Estimated stock levels as of Fri, May 29, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.

Description

The MS 261 C-M has all the same great features as the MS 261—low exhaust emissions, high fuel efficiency and robust performance—but also features the advanced STIHL M-Tronic™ engine management system. The STIHL M-Tronic™ onboard microprocessor digitally monitors and automatically compensates for changes in your work conditions, including elevation, temperature, fuel quality, varying octane levels, and dirty filters. The end result is maximum performance across a wide range of cutting conditions without making any manual adjustments. The MS 261 C-M also features redesigned cylinders and a slimmer, ergonomic housing for an impressive power-to-weight ratio.

Not for sale in California.

Specifications

General

Blade 20 in
Chain Oil Capacity 9.13 oz.
Chain Pitch .325 in
Chain Size .325" RM3
Chain Type OILOMATIC® CHAIN
Engine 50.2 cc
Engine Power 4.0 bhp
Fuel Capacity 16.9 oz.
Gauge 0.063 in
Power Source Gas
Powerhead Weight 10.8 lbs.
Type Gas Chain Saw

Manufacturing Details
The following information is subject to change without notice

Manufacturer Warranty 1 Year
Prop 65 Warning Warning WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
Shop USA Yes

Label Information

Precautionary Statement CAUTION: he occurrence called “kickback” can cause serious or fatal injury. Always read the instruction manual carefully before using your saw. STIHL uses a green and yellow color-coding system to help you select a powerhead, bar and chain combination that complies with the kickback requirements of ANSI Standard B175.1 (gasoline-powered saws). STIHL recommends the use of green reduced kickback bars and green low kickback chains on all STIHL chainsaws. mproper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products.

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Related Documents

Brochure (PDF)

Warranty (PDF)

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